1 ; RUN: llc -O2 -mtriple amdgcn--amdhsa -mcpu=fiji -amdgpu-scalarize-global-loads=true -verify-machineinstrs < %s | FileCheck %s 2 3 ; uniform loads 4 ; CHECK-LABEL: @uniform_load 5 ; CHECK: s_load_dwordx4 6 ; CHECK-NOT: flat_load_dword 7 8 define amdgpu_kernel void @uniform_load(float addrspace(1)* %arg, [8 x i32], float addrspace(1)* %arg1) { 9 bb: 10 %tmp2 = load float, float addrspace(1)* %arg, align 4, !tbaa !8 11 %tmp3 = fadd float %tmp2, 0.000000e+00 12 %tmp4 = getelementptr inbounds float, float addrspace(1)* %arg, i64 1 13 %tmp5 = load float, float addrspace(1)* %tmp4, align 4, !tbaa !8 14 %tmp6 = fadd float %tmp3, %tmp5 15 %tmp7 = getelementptr inbounds float, float addrspace(1)* %arg, i64 2 16 %tmp8 = load float, float addrspace(1)* %tmp7, align 4, !tbaa !8 17 %tmp9 = fadd float %tmp6, %tmp8 18 %tmp10 = getelementptr inbounds float, float addrspace(1)* %arg, i64 3 19 %tmp11 = load float, float addrspace(1)* %tmp10, align 4, !tbaa !8 20 %tmp12 = fadd float %tmp9, %tmp11 21 %tmp13 = getelementptr inbounds float, float addrspace(1)* %arg1 22 store float %tmp12, float addrspace(1)* %tmp13, align 4, !tbaa !8 23 ret void 24 } 25 26 ; non-uniform loads 27 ; CHECK-LABEL: @non-uniform_load 28 ; CHECK: flat_load_dword 29 ; CHECK-NOT: s_load_dwordx4 30 31 define amdgpu_kernel void @non-uniform_load(float addrspace(1)* %arg, [8 x i32], float addrspace(1)* %arg1) #0 { 32 bb: 33 %tmp = call i32 @llvm.amdgcn.workitem.id.x() #1 34 %tmp2 = getelementptr inbounds float, float addrspace(1)* %arg, i32 %tmp 35 %tmp3 = load float, float addrspace(1)* %tmp2, align 4, !tbaa !8 36 %tmp4 = fadd float %tmp3, 0.000000e+00 37 %tmp5 = add i32 %tmp, 1 38 %tmp6 = getelementptr inbounds float, float addrspace(1)* %arg, i32 %tmp5 39 %tmp7 = load float, float addrspace(1)* %tmp6, align 4, !tbaa !8 40 %tmp8 = fadd float %tmp4, %tmp7 41 %tmp9 = add i32 %tmp, 2 42 %tmp10 = getelementptr inbounds float, float addrspace(1)* %arg, i32 %tmp9 43 %tmp11 = load float, float addrspace(1)* %tmp10, align 4, !tbaa !8 44 %tmp12 = fadd float %tmp8, %tmp11 45 %tmp13 = add i32 %tmp, 3 46 %tmp14 = getelementptr inbounds float, float addrspace(1)* %arg, i32 %tmp13 47 %tmp15 = load float, float addrspace(1)* %tmp14, align 4, !tbaa !8 48 %tmp16 = fadd float %tmp12, %tmp15 49 %tmp17 = getelementptr inbounds float, float addrspace(1)* %arg1, i32 %tmp 50 store float %tmp16, float addrspace(1)* %tmp17, align 4, !tbaa !8 51 ret void 52 } 53 54 55 ; uniform load dominated by no-alias store - scalarize 56 ; CHECK-LABEL: @no_memdep_alias_arg 57 ; CHECK: flat_store_dword 58 ; CHECK: s_load_dword [[SVAL:s[0-9]+]] 59 ; CHECK: v_mov_b32_e32 [[VVAL:v[0-9]+]], [[SVAL]] 60 ; CHECK: flat_store_dword v[{{[0-9]+:[0-9]+}}], [[VVAL]] 61 62 define amdgpu_kernel void @no_memdep_alias_arg(i32 addrspace(1)* noalias %in, [8 x i32], i32 addrspace(1)* %out0, [8 x i32], i32 addrspace(1)* %out1) { 63 store i32 0, i32 addrspace(1)* %out0 64 %val = load i32, i32 addrspace(1)* %in 65 store i32 %val, i32 addrspace(1)* %out1 66 ret void 67 } 68 69 ; uniform load dominated by alias store - vector 70 ; CHECK-LABEL: {{^}}memdep: 71 ; CHECK: flat_store_dword 72 ; CHECK: flat_load_dword [[VVAL:v[0-9]+]] 73 ; CHECK: flat_store_dword v[{{[0-9]+:[0-9]+}}], [[VVAL]] 74 define amdgpu_kernel void @memdep(i32 addrspace(1)* %in, [8 x i32], i32 addrspace(1)* %out0, [8 x i32], i32 addrspace(1)* %out1) { 75 store i32 0, i32 addrspace(1)* %out0 76 %val = load i32, i32 addrspace(1)* %in 77 store i32 %val, i32 addrspace(1)* %out1 78 ret void 79 } 80 81 ; uniform load from global array 82 ; CHECK-LABEL: @global_array 83 ; CHECK: s_getpc_b64 [[GET_PC:s\[[0-9]+:[0-9]+\]]] 84 ; CHECK: s_load_dwordx2 [[OUT:s\[[0-9]+:[0-9]+\]]], s[4:5], 0x0 85 ; CHECK: s_load_dwordx2 [[A_ADDR:s\[[0-9]+:[0-9]+\]]], [[GET_PC]], 0x0 86 ; CHECK: s_load_dwordx2 [[A_ADDR1:s\[[0-9]+:[0-9]+\]]], [[A_ADDR]], 0x0 87 ; CHECK: s_load_dword [[SVAL:s[0-9]+]], [[A_ADDR1]], 0x0 88 ; CHECK: v_mov_b32_e32 [[VVAL:v[0-9]+]], [[SVAL]] 89 ; CHECK: flat_store_dword v[{{[0-9]+:[0-9]+}}], [[VVAL]] 90 @A = common local_unnamed_addr addrspace(1) global i32 addrspace(1)* null, align 4 91 92 define amdgpu_kernel void @global_array(i32 addrspace(1)* nocapture %out) { 93 entry: 94 %load0 = load i32 addrspace(1)*, i32 addrspace(1)* addrspace(1)* @A, align 4 95 %load1 = load i32, i32 addrspace(1)* %load0, align 4 96 store i32 %load1, i32 addrspace(1)* %out, align 4 97 ret void 98 } 99 100 101 ; uniform load from global array dominated by alias store 102 ; CHECK-LABEL: @global_array_alias_store 103 ; CHECK: flat_store_dword 104 ; CHECK: v_mov_b32_e32 v[[ADDR_LO:[0-9]+]], s{{[0-9]+}} 105 ; CHECK: v_mov_b32_e32 v[[ADDR_HI:[0-9]+]], s{{[0-9]+}} 106 ; CHECK: flat_load_dwordx2 [[A_ADDR:v\[[0-9]+:[0-9]+\]]], v{{\[}}[[ADDR_LO]]:[[ADDR_HI]]{{\]}} 107 ; CHECK: flat_load_dword [[VVAL:v[0-9]+]], [[A_ADDR]] 108 ; CHECK: flat_store_dword v[{{[0-9]+:[0-9]+}}], [[VVAL]] 109 define amdgpu_kernel void @global_array_alias_store(i32 addrspace(1)* nocapture %out, [8 x i32], i32 %n) { 110 entry: 111 %gep = getelementptr i32, i32 addrspace(1) * %out, i32 %n 112 store i32 12, i32 addrspace(1) * %gep 113 %load0 = load i32 addrspace(1)*, i32 addrspace(1)* addrspace(1)* @A, align 4 114 %load1 = load i32, i32 addrspace(1)* %load0, align 4 115 store i32 %load1, i32 addrspace(1)* %out, align 4 116 ret void 117 } 118 119 120 declare i32 @llvm.amdgcn.workitem.id.x() #1 121 122 attributes #1 = { nounwind readnone } 123 124 !8 = !{!9, !9, i64 0} 125 !9 = !{!"float", !10, i64 0} 126 !10 = !{!"omnipotent char", !11, i64 0} 127 !11 = !{!"Simple C/C++ TBAA"} 128
